Slider for slide fasteners



y 4, 1954 N. J. POUX 2,677,163

SLIDER FOR SLIDE FASTENERS Filed Oct. 11 1950 4 ga ingig;

( INVEN TOR.

N051 J. POl/X.

Patented May 4, 1954 SLIDER FOR SLIDE FASTENERS Noel J. Poux, Meadville, Pa., assignor to Talon, Inc., a corporation of Pennsylvania Application October 11, 1950, Serial No. 189,631

7 Claims.

This invention relates to slide fasteners, and particularly to an improved lock slider therefor.

Various types of locking sliders have been heretofore suggested and used, and while most of them have been satisfactory in certain applications of the fastener, they were unsatisfactory in other applications in that a lug and locking mechanism projected above the surface of the slider. This resulted in a relatively thick slider body which is objectionable, primarily because it does not lend itself to laundering and pressing operations to which various articles having slide fasteners incorporated therewith are subjected.

The present invention relates more particularly to a slider which is known as the flat type wherein the upper and lower surfaces or wings are sub stantially flat and parallel, and wherein the pull member is disposed substantially in the plane of the wing of the slider to which it is attached when the slider is in its normal or locked position.

Accordingly, it is one of the objects of the present invention to provide an improved lock slider which is substantially fiat so as to reduce the thickness thereof to a minimum, and which has new features and characteristics which improve the operation and enhances the appearance of the fastener.

It is another object of the invention to provide an improved fiat lock slider which is simple and inexpensive in its construction and, at the same time, effective in its use.

It is a further object of this invention to provide an improved lock slider which consists of a minimum number of parts which can be easily and quickly assembled and, at the same time, provide a slider which is strong and rugged in its construction.

Various other objects and advantages of this invention will be more apparent in the course of the following specifications, and will be particularly pointed out in the appended claims.

In the accompanying drawings, there is shown for the purpose of illustration, an embodiment which my invention may assume in practice.

In these drawings:

Fig. 1 is a plan view of a slide fastener having the improved slider of my invention incorporated therewith;

Fig. 2 is a sectional view taken on line 2-2 of Fig. 1;

Fig. 3 is a sectional view taken on line 3-3 of Fig. 1;

Fig. 4 is a sectional view taken on line 4-4 of Fig. 2;

Fig. 5 is a side view of the slider body of my invention with the pull member unattached; and

Fig. 6 is a plan view of the pull member for use with my improved slider.

Referring more particularly to the drawings, there is shown in Fig. 1, a conventional type of slide fastener having the improved slider of my invention incorporated therewith. Such a fastener consists of cooperating rows of spaced interlocking fastener elements 2 attached to opposed beaded edges of stringer tapes 3. There is arranged on the rows of fastener elements, the slider of the present invention, generally designated at t, for longitudinal movement in opposite directions therealong for opening and closing the fastener in a manner well known to those skilled in the art. This slider consists generally of a body member having spaced-apart upper and lower wing portions 5 and 6, respectively, each aving marginal flanges, as at 1, and which are connected at the top end thereof by means of a substantially V-shaped neck portion 8 so as to provide a substantially Y-shaped channel 9 within the slider body. The marginal flanges i preferably extend from the lower end of the slider body to a point intermediate the length thereof below the neck portion 8. The slider may be of any conventional shape, the one illustrated being generally in the shape of a shield, and may be made either of a metallic or plastic material. The upper portions of the inner surfaces of both the wing portions 5 and 6 around the neck portion 8 are preferably beveled, as at l9, so as to aid in guiding the fastener elements 2 into the channel of the slider.

The upper wing portion 5 is preferably thicker than the wing portion 6 and the upper surface thereof is .preferably smooth and slightly rounded so as to present a pleasing appearance. On the inner side of this upper wing portion, there is arranged a transversely extending slot in opening into the side edges thereof and communicating with the Y-shaped channel 9 within the slider body. It will be seen that this transverse slot is positioned centrally of the body member and at a point immediately below the neck portion 8 and above the inner ends of the marginal flanges 1.

There is provided a yoke-shaped .pull member l2, as more clearly shown in Fig. 6, having a finger grasping portion l3 and a continuous pivotal portion M which is an important aspect of the present invention. On this pivotal portion 1 l, there is arranged centrally thereof, a relatively wide locking prong or projection l5 and to either side thereof a trunnion portion [6.

This continuous pivotal portion l4 of the pull member is positioned in the transverse slot ll of the slider body, as more clearly shown in Figs. 2 and 3, with the trunnion portions 16 thereof disposed in bearing portions ll of the slot It] at each end thereof. It will be seen that the locking projection i is positioned centrally of the slider body immediately below the neck portion 8 thereof, and there is provided on the inner side of the wing portion 5 preferably a recessed portion H for receiving the locking projection I8 when the pull member is moved to its unlocked position.

When the pull member i2 is disposed in its locked or normal position, as shown in Figs. 1 and 3 and the full lines of Fig. 2, it will be seen that it is disposed substantially in the plane of the upper wing flat against the fastener. in such position, the locking projection 15 extends into the channel of the slider and engages the fastener elements 2 disposed therein so as to lock the slider against movement along the fastener elements. This locking projection acts as a combination pin and cam lock due to the location and length thereof. That is to say, it extends between the fastener elements on one of the stringers and tends to lock the opposed elements frictionally due to a eamming action. This pivotal portion i preferably has a diameter slightly smaller than that of the slot Hi so as to fit rather loosely therein in order that it is capable of a slight rocking movement so that the pull member will not tend to stick and can be easily moved to its locked and unlocked position. When the pull member is lifted to manipulate the fastener, as shown in the broken lines of Fig. 2, it will be seen that the locking projection i5 moves out of engagement with the fastener elements and out of the channel of the slider body and into the recess l6.

By providing such a construction, it will be seen that the pull member can be easily and quickly attached to the slider body. It is merely necessary to place the pivotal portion E4 of the pull member between the wing portions 5 and 6 at the lower or open end thereof and move it up until the pivotal portion is positioned in the transverse slot it It is desirable that the pivotal portion be held against displacement from the slot and for this purpose there is provided a pair of protracting portions i8 arranged to one side of the slot on the inner side of the upper wing which are bent over the trunnion portions it, as shown in Fig. a, after the pull member has been assembled therein.

As a result of my invention, it will be seen that there is provided a simple and practical lock slider consisting of a minimum number of parts which can be inexpensively fabricated and assembled so as to provide a strong and durable construction. By means of such a construction, it is possible to provide a lock slider which is considerably thinner than other lock sliders heretofore suggested and used so as to obtain a relatively flat construction, which is a decided advantage. Also, as a result of my slider invention, there is provided a lock slider which is neat and has a pleasing appearance. Further, by providing a pull member with a continuous pivotal portion, a so-called through and through construction is obtained which is an extremely desirable feature in sliders for slide fasteners,

While I have shown and described an embodiment which my invention may assume in practice, it will be understood that this embodiment is merely for the purpose of illustration and description, and that other forms may be devised within the scope of my invention as defined in the appended claims.

What I claim as my invention is:

1. A slider for slide fasteners of the class described comprising a pair of spaced-apart Wing portions connected together at one end so as to provide a channeled body member, said body member having intermediate its length an aperture arranged in one of said wing portions to either side thereof opening into said channel, a yoke-shaped pull member having substantially a continuous trunnion portion pivotally arranged in said apertures and extending into said channel, and locking means arranged on said trunnion portion intermediate the length thereof which is adapted to engage the fastener elements when said pull member is disposed in one of its limiting positions substantially parallel to said slider.

2. A slider for slide fasteners of the class described comprising a body member having spaced-apart wing portions connected by a neck portion at one end thereof, said wing portions having inwardly extending marginal flanges extending from one end thereof to a point intermediate the length thereof so as to provide a channeled body member, one of said wing por tions having a transversely extending slot arranged therein at a point adjacent the upper ends of said flanges, said slot opening through the side edges of said wing portion and communicating with said channel, a yoke-shaped pull member having a continuous trunnion portion pivotally arranged in said slot and said openings, and a locking means carried by said trunnion portion centrally thereof which is adapted to engage with the fastener elements to lock the slider against unintentional movement.

3. A slider for slide fasteners of the class described comprising a body member having spaced-apart wing portions connected by a neck portion at one end thereof, said wing portions having inwardly extending marginal flanges so as to provide substantially a Y-shaped channel therebetween, one of said wing portions having a transversely extending slot arranged therein opening inwardly into said channel and extending through said flanges, a yoke-shaped pull member having a continuous trunnion portion pivotally arranged in said slot, a locking projection arranged on said pull centrally of said trunnion portion which is disposed in one position in said slot and adapted to engage with the fastener elements so as to prevent unintentional movement of the slider, and means for holding said trunnion portion in said slot so as to prevent displacement thereof.

4. A slider for slide fasteners of the class described comprising a body member having spaced apart wing portions inter-connected at one end by a neck portion so as to provide substantially a Y-shaped channel therebetween, one of said wing portions having a transversely extending substantially U -shaped slot arranged on the inner side thereof below said neck portion communicating with the channel in said slider body and extending through the outer sides of said wing portion at either side thereof, and a substantially yoke-shaped pull member having substantially a continuous straight trunnion portion at one end thereof which is pivotally disposed in said slot, said trunnion portion being slightly smaller than said U-shaped transverse slot with the end portions of said slot at each side of said wing portion acting as bearing portions for said trunnion portion whereby said pull member is adapted to be disposed in one position substantially in the plane of said wing portion.

5. A slider for slide fasteners of the class described, as defined in claim 4, including means for retaining the trunnion portion of said pull memher in said slot so as to prevent displacement of said trunnion portion therefrom.

6. A slider for slide fasteners of the class described as defined in claim 4, including locking means arranged on the trunnion portion of the pull member centrally thereof which is adapted to be disposed in the channel of said slider in engagement with the fastener elements therein so as to lock the slider against unintentional movement when said pull member is disposed in References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 2,140,764 Reiter Dec. 20, 1938 2,185,658 Carlile Jan. 2, 1940 2,205,694 Morin June 25, 1940 2,228,142 Marinsky Jan. 7, 1941 2,309,140 Rod Jan. 26, 1943 

